South Africa's economy was helped by its natural resources.
<u>EXPLANATION:</u>
South Africa today is the second largest economy of Africa. The country is abound in natural resources which contribute to the economy in a great manner.
Mining in South Africa contributes the maximum to the economy. South Africa happens to be the largest "mining and mineral" processing country.
Minerals like manganese, antimony, phosphate rock etc. are mined in South Africa and exported from there. South Africa is the "world's third largest exporter of coal".
I would say it will defitley be either B or D, what have you been reading about or doing before this? If you were reading about how healthy they are it would be D, but if you were reading how they are being destroyed it would be B